Submission #805407

#	Time	Username	Problem	Language	Result	Execution time	Memory
805407		ZHIRDILBILDIZ	Library (JOI18_library)	C++14	0 / 100	42 ms	436 KiB

library

#include<bits/stdc++.h>
#include"library.h"
using namespace std ;
const int N = 1e3 ;
//int Query(vector<int>& v)
//{
//    int num ;
//    cout << "? " ;
//    for(int i : v)
//        cout << i << ' ' ;
//    cout << '\n' ;
//    cin >> num ;
//    return num ;
//}
//void Answer(vector<int>& res)
//{
//    cout << "! " ;
//    for(int i : res)
//        cout << i << ' ' ;
//    exit(0) ;
//}
vector<int> qr, ans, v[N + 1] ;
void dfs(int city, int last)
{
    ans.push_back(city) ;
    for(int i : v[city])
    {
        if(i == last)
            continue ;
        dfs(i, city) ;
    }
}
int get_kol(vector<int> qr)
{
    int l = 0, r = 0, kol = 0 ;
    for(int i = 0 ; i < qr.size() ; i++)
        if(qr[i])
        {
            if(!l)l = i + 1 ;
            r = i + 1 ;
        }
    for(int i = 0 ; i < qr.size() ; i++)
    {
        if(!qr[i])
            continue ;
        for(int j : v[i + 1])
            if(l <= j && j <= r)
                kol++ ;
    }
    return kol / 2 ;
}
void Solve(int n)
{
    for(int i = 1 ; i <= n ; i++)
        qr.push_back(0) ;
    for(int i = 1 ; i < n ; i++)
    {
        int l1 = 0, r1 = n + 1, l2 = 0, r2 ;
        bool flag = 0 ;
        while(l1 + 1 < r1)
        {
            int mid = (l1 + r1) >> 1, num ;
            for(int j = 1 ; j <= mid ; j++)
                qr[j - 1] = 1 ;
            num = get_kol(qr) ;
//            cout<<"1+ "<<l1<<' '<<r1 << ' ' << num <<'\n' ;
            if(Query(qr) != mid - get_kol(qr))
                r1 = mid ;
            else
                l1 = mid ;
            for(int j = 1 ; j <= mid ; j++)
                qr[j - 1] = 0 ;
        }
        r2 = r1 ;
        while(l2 + 1 < r2)
        {
            int mid = (l2 + r2) >> 1, num ;
            for(int j = mid ; j <= r1 ; j++)
                qr[j - 1] = 1 ;
            num = get_kol(qr) ;
//            cout<<"2+ "<<l2<<' '<<r2 << ' ' << num <<'\n' ;
            if(Query(qr) != (r1 - mid + 1) - get_kol(qr))
                l2 = mid ;
            else
                r2 = mid ;
            for(int j = mid ; j <= r1 ; j++)
                qr[j - 1] = 0 ;
        }
//        cout << l2 << '-' << r1 << '\n' ;
        v[l2].push_back(r1) ;
        v[r1].push_back(l2) ;
    }
    for(int i = 1 ; i <= n ; i++)
        if(v[i].size() == 1)
        {
            dfs(i, 0) ;
            break ;
        }
    Answer(ans) ;
}
//signed main()
//{
//    int n ;
//    cin >> n ;
//    Solve(n) ;
//    return 0 ;
//}

Compilation message (stderr)

library.cpp: In function 'int get_kol(std::vector<int>)':
library.cpp:36:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(int i = 0 ; i < qr.size() ; i++)
      |                     ~~^~~~~~~~~~~
library.cpp:42:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     for(int i = 0 ; i < qr.size() ; i++)
      |                     ~~^~~~~~~~~~~
library.cpp: In function 'void Solve(int)':
library.cpp:62:39: warning: variable 'num' set but not used [-Wunused-but-set-variable]
   62 |             int mid = (l1 + r1) >> 1, num ;
      |                                       ^~~
library.cpp:77:39: warning: variable 'num' set but not used [-Wunused-but-set-variable]
   77 |             int mid = (l2 + r2) >> 1, num ;
      |                                       ^~~
library.cpp:59:14: warning: unused variable 'flag' [-Wunused-variable]
   59 |         bool flag = 0 ;
      |              ^~~~

• Subtask 1: 0 / 19
• Subtask 2: 0 / 81